If seeing is believing, weightview.com will convince you that yes, you can meet your weight-loss goals. Upload a full-body photo of yourself, and in two days you'll receive a (free!) pic that's you — only 5, 10, or 20 pounds thinner (your choice — be sure to follow the photo guidelines so your picture isn't rejected). Print it and tape it to your fridge, computer, or bedroom mirror to get motivated to work toward that slimmer, healthier you.

2. Appreciate your allergies.

There may be a silver lining to springtime sniffles, sneezes, and snottiness: A Cornell University study suggests that having hay fever, eczema, or food or animal allergies leads to a lower risk of certain cancers. Why? Those symptoms may rid the body of toxins before they can harm healthy cells, says Paul Sherman, Ph.D., who led the study. Allergies also keep us away from chemicals, like those in smoke — reducing our risk of cancers of the skin, lungs, throat, cervix, uterus, and gastrointestinal tracts. That's something to breathe easier about this season.

Are you one of the estimated 11 million women who have irritable bowel syndrome? Good news: New treatment guidelines from the American College of Gastroenterology may mean new forms of relief. Researchers have found that some antidepressants might reduce abdominal pain associated with IBS, for instance; certain probiotics may ease symptoms like gas, diarrhea, and constipation. To learn more (and discuss these findings with your doc), go to nature.com/ajg/ibs.

4. Stay vigilant about breast cancer.

Women at high risk for breast cancer — including those with a family or personal history — are generally advised to have one mammogram and one MRI scan every year, usually around the same time. But new research from the University of Texas M.D. Anderson Cancer Center indicates that alternating the two every six months may detect tumors better. "More than half of the cancers we found using MRI were not seen on a mammogram six months earlier," says lead researcher Huong Le-Petross, M.D. Talk to your doctor to see whether you're at high risk and how to proceed if so.